Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755257AbbESOo5 (ORCPT ); Tue, 19 May 2015 10:44:57 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:63226 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754524AbbESOoz (ORCPT ); Tue, 19 May 2015 10:44:55 -0400 Message-ID: <555B4C4E.2020403@fb.com> Date: Tue, 19 May 2015 10:44:30 -0400 From: Chris Mason User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Piotr Szymaniak CC: Govindarajulu Varadarajan <_govind@gmx.com>, , , , , Subject: Re: btrfs: kernel BUG at mm/page-writeback.c:2286! References: <555B3DEE.1000900@fb.com> <20150519135416.GO2539@wloczykij> In-Reply-To: <20150519135416.GO2539@wloczykij> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.54.13] X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.14.151,1.0.33,0.0.0000 definitions=2015-05-19_05:2015-05-19,2015-05-19,1970-01-01 signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1044 Lines: 27 On 05/19/2015 09:54 AM, Piotr Szymaniak wrote: > On Tue, May 19, 2015 at 09:43:10AM -0400, Chris Mason wrote: >> On 05/19/2015 03:55 AM, Govindarajulu Varadarajan wrote: >>> 2286--->BUG_ON(!PageLocked(page)); >>> >>> [ 166.769868] BTRFS info (device sdf): no csum found for inode 1154 >>> start 43192320 >>> [ 166.774334] BTRFS info (device sdf): csum failed ino 1154 extent >>> 4434247680 csum 1388825687 wanted 0 mirror 0 >> >> >> Josef and I both missed this the first time you pasted it, but the >> unlocked page is almost certainly related to this csum error. While >> we're looking at things can you please scrub? Josef and I just read through all of this, and I'm not finding a way to connect the crc error to the BUG_ON. Do all kernels crash like this, or was it just 4.1-rc? -chris -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/